Brake shoe



Aug. 14, 1923.

E. w. MCDONALD BRAKE SHOE attouwq Patented Aug. 14, 1923.

BRAKE SHOE.

Application filed June 8,

To all whom it may concern:

Be it known that I, Enwnnnlv. Mo- DbNALD, a. citizen of the United States, residing at Talladega, in the county of Talladeg-a and State of Alabama, have invented certain new and useful Improvements in Brake Shoes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled, in the ant to which it appertains to make and use the same.

This invention relates to brake shoes of the cast metal type, the purpose being the provision of a shoe of this-kind which will not wearra-pidly and which will not lock the wheel and i-ause the same to slide and produce flat places and which will not fracture readily, or if broken, will not discharge the pieces upon the track.

The invention consists of a cast metal brake shoe for railway locomotives and cars having its face and sides chilled so as to resist wear and prevent gripping the tread and flange of the wheel so as not to release readily, said shoe having steel rods and supporting straps cast therein. the rods serving as re-- inforcing and tie means, whereby to strengthen the shoe and hold the parts together in the event'of the shoe becoming broken.

Other objects and advantages will be apthat in adapting the same to meet ditl'erout. conditions a'nd requirements. various changes in the form. proportion and minor details of construction may be resorted to without departing from the nature of the invention.

Referring to the accompanying drawings forming a part of the specification.

l igurcs l and 2 are lace and rear views, respectively oi a cast metal brake shoe cmbodying the invention Figure 3 is a side view of the shoe,

Figure 4 is a transverse section on the line 411-:1: of Figure 2, and

Figure 5 is a cross section on the line y3 of Figure 2.

1921. Serial no. 475,976.

Corresponding and like parts are referred to in the following description and designated in the several views of the drawings by like reference characters.

The shoe may be of any desired outline and is of cast metal with its face and sides chilled to resist wear and prevent gripping the tread and flange of a car Wheel inn manner to not release readily and cause the wheel to slide and produce flat places. The shoe is designated generally by the numeral 1 and is provided upoii its rear side with the usual projections. Associated with the hooks 2 is a steel strap- 3 having its end portions embedded in the body of the shoe and cast therein. The strap 3 retains the shoe in position until removed by hand. Steel rods 4 extend t-he entire length of the shoe and are cast therein arid serve both as reinforcing 70. and tie means.

In the event of the shoe becoming broken, the parts are held together and prevented from dropping by means of the rods 4. The steel rods 4 are disposed upon opposite sides of amedial line and may be of any cross sectional outline and. size.- The face and. sides of the shoe may be chilledto any required depth and the body of the shoe is of ordinary cast metal so as to resist stresses and strains without fracture.

What is claimed is:

A cast metal brake shoe having the entire area of its face and sides chilled, whereby to resist \vear and prevent the gripping of the tread' and flan e of a. car wheel, steel rods embedded in said shoe at opposite sides of its longitudinal medial line and extending from end to end of the shoe, fastening hooks on the rear side of said shoe, a steel. strap cast with the shoe and extending along the 90 inner side of the fastening hooks and across the space between'the end of said hooks. and said steel strap straddling said steel bars and having its ends outturned.

In testimony whereof I atlix my signature in presence of two witnesses.

' EDWARD \vMen imam).

1 I \Vitnesses; i i 1 ltlnnoiiim'r HUEY, I 1;

M. K. SIMS. 

